She told security guards, and they told a cop who happened to be on patrol in the mall's parking lot, according to a sheriff's statement.

The deputy spotted a suspect fitting the witness' description -- a man in a wig and women's clothing -- "hiding" in a storage area at the shopping center, officials said.

Here's the money paragraph from the sheriff's department:

LASD

The investigation revealed that the male had disguised himself in woman's clothing, including the wearing of a bra and a wig, and had allegedly entered the woman's restroom with a video camera concealed in a paper bag. He then secretly videotaped women while they were using the restroom.

The suspect, ID'd as 33-year-old Jason Pomare of Palmdale, was arrested and jailed, cops said. Yesterday he was charged with six counts of "unlawful use of a concealed camera for purposes of sexual gratification."